Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means the car's computer is having trouble figuring out how fast the transmission is spinning. It's like when you can't tell if a fan is on high or low speed.
The vehicle's transmission control module (TCM) has detected an issue with the readings from the input/turbine speed sensor and the output speed sensor.
P1700 indicates that there is a discrepancy between the input/turbine speed sensor and the output speed sensor readings. This could be due to a fault in the sensors themselves, wiring issues, or a problem within the transmission.
• Check Engine Light is on
• Transmission may not shift properly
• Reduced fuel efficiency
• Vehicle may go into limp mode
• Faulty input/turbine speed sensor
• Faulty output speed sensor
• Wiring issues or poor connections
• Internal transmission problems
TCM: Transmission Control Module
OBD-II: On-Board Diagnostics, Second Generation
• Scan the vehicle for codes and freeze frame data
• Inspect the wiring and connectors for damage
• Test the input/turbine and output speed sensors
• Check the transmission fluid level and condition
• Replace faulty speed sensors
• Repair or replace damaged wiring
• Flush and replace transmission fluid
• Reprogram or replace the TCM if necessary
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $600
Moderate
• Nissan Altima
• Ford Focus
• Honda Accord
• Regular transmission maintenance
• Check and replace transmission fluid as needed
• Inspect wiring and connectors for wear
Sensor Issue
• Avoid driving the vehicle aggressively until repaired
• Consult a professional mechanic for diagnosis
• Keep up with regular transmission maintenance
Check with your vehicle manufacturer for specific warranty coverage on transmission components.
This code has been associated with sensor failures and wiring issues in various models over the years.
Moderate – Addressing this issue promptly can prevent further transmission damage.
Driving with a faulty transmission sensor can lead to unsafe driving conditions. Always ensure your vehicle is in proper working order.
• Vehicle should be at operating temperature
• Test drive to observe any shifting issues
The input/turbine speed sensor is typically located inside the transmission, while the output speed sensor is usually mounted on the transmission case.
Q: Can I drive my car with a P1700 code?
A: It's not recommended to drive for long periods with this code, as it can lead to further transmission damage.
Q: How do I reset the P1700 code?
A: After repairs, you can reset the code using an OBD-II scanner. However, if the issue isn't fixed, the code will return.
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